# Author: wangjk
# 2025年10月28日11时15分
# xxx@qq.com

pizzas = ["liulian", "chicken", "pepper"]
friend_pizzas = pizzas[:]  # 地址不同，两份数据
pizzas.append('new')
friend_pizzas.append('another')

print('My favorite pizzas are: ', end='')
for pizza in pizzas:
    print(pizza, end=' ')

print()

print("My friend's favorite pizzas are: ", end='')
for pizza in friend_pizzas:
    print(pizza, end=' ')
